/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.gobblin.data.management.policy;

import java.util.Collection;
import java.util.List;
import java.util.Properties;

import lombok.ToString;

import com.google.common.collect.Lists;

import org.apache.gobblin.data.management.version.FileSystemDatasetVersion;


/**
 * Implementation of {@link VersionSelectionPolicy} that selects nothing.
 */
@ToString
public class SelectNothingPolicy implements VersionSelectionPolicy<FileSystemDatasetVersion> {

  public SelectNothingPolicy(Properties properties) {}

  @Override
  public Class<? extends FileSystemDatasetVersion> versionClass() {
    return FileSystemDatasetVersion.class;
  }

  @Override
  public Collection<FileSystemDatasetVersion> listSelectedVersions(List<FileSystemDatasetVersion> allVersions) {
    return Lists.newArrayList();
  }
}
